summaryrefslogtreecommitdiffstats
path: root/connectivity/source/drivers/hsqldb/HDriver.cxx
blob: c18a46e8440e5622c3c7cd7bf2060441b8c8d1b7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include <hsqldb/HDriver.hxx>
#include <hsqldb/HConnection.hxx>
#include <osl/diagnose.h>
#include <sal/log.hxx>
#include <connectivity/dbexception.hxx>
#include <com/sun/star/configuration/theDefaultProvider.hpp>
#include <com/sun/star/sdbc/DriverManager.hpp>
#include <com/sun/star/sdbc/XResultSet.hpp>
#include <com/sun/star/sdbc/XRow.hpp>
#include <com/sun/star/embed/XTransactionBroadcaster.hpp>
#include <com/sun/star/embed/ElementModes.hpp>
#include <TConnection.hxx>
#include <hsqldb/HStorageMap.hxx>
#include <jvmfwk/framework.hxx>
#include <com/sun/star/reflection/XProxyFactory.hpp>
#include <com/sun/star/embed/XStorage.hpp>
#include <com/sun/star/frame/Desktop.hpp>
#include <com/sun/star/util/XFlushable.hpp>
#include "HTerminateListener.hxx"
#include <hsqldb/HCatalog.hxx>
#include <rtl/ustrbuf.hxx>
#include <osl/file.h>
#include <osl/process.h>
#include <comphelper/namedvaluecollection.hxx>
#include <comphelper/propertysequence.hxx>
#include <comphelper/servicehelper.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <comphelper/types.hxx>
#include <unotools/confignode.hxx>
#include <unotools/ucbstreamhelper.hxx>
#include <strings.hrc>
#include <resource/sharedresources.hxx>
#include <i18nlangtag/languagetag.hxx>
#include <tools/diagnose_ex.h>
#include <o3tl/string_view.hxx>

#include <memory>


namespace connectivity
{

    using namespace hsqldb;
    using namespace css::uno;
    using namespace css::sdbc;
    using namespace css::sdbcx;
    using namespace css::beans;
    using namespace css::frame;
    using namespace css::lang;
    using namespace css::embed;
    using namespace css::io;
    using namespace css::util;
    using namespace css::reflection;

    constexpr OUStringLiteral IMPL_NAME = u"com.sun.star.sdbcx.comp.hsqldb.Driver";



    ODriverDelegator::ODriverDelegator(const Reference< XComponentContext >& _rxContext)
        : ODriverDelegator_BASE(m_aMutex)
        ,m_xContext(_rxContext)
        ,m_bInShutDownConnections(false)
    {
    }


    ODriverDelegator::~ODriverDelegator()
    {
        try
        {
            ::comphelper::disposeComponent(m_xDriver);
        }
        catch(const Exception&)
        {
        }
    }


    void SAL_CALL ODriverDelegator::disposing()
    {
        ::osl::MutexGuard aGuard(m_aMutex);

        try
        {
            for (const auto& rConnection : m_aConnections)
            {
                Reference<XInterface > xTemp = rConnection.first.get();
                ::comphelper::disposeComponent(xTemp);
            }
        }
        catch(Exception&)
        {
            // not interested in
        }
        m_aConnections.clear();
        TWeakPairVector().swap(m_aConnections);

        cppu::WeakComponentImplHelperBase::disposing();
    }

    Reference< XDriver > const & ODriverDelegator::loadDriver( )
    {
        if ( !m_xDriver.is() )
        {
            Reference<XDriverManager2> xDriverAccess = DriverManager::create( m_xContext );
            m_xDriver = xDriverAccess->getDriverByURL("jdbc:hsqldb:db");
        }

        return m_xDriver;
    }


    namespace
    {
        OUString lcl_getPermittedJavaMethods_nothrow( const Reference< XComponentContext >& _rxContext )
        {
            OUString aConfigPath =
                "/org.openoffice.Office.DataAccess/DriverSettings/" +
                IMPL_NAME +
                "/PermittedJavaMethods";
            ::utl::OConfigurationTreeRoot aConfig( ::utl::OConfigurationTreeRoot::createWithComponentContext(
                _rxContext, aConfigPath ) );

            OUStringBuffer aPermittedMethods;
            const Sequence< OUString > aNodeNames( aConfig.getNodeNames() );
            for ( auto const & nodeName : aNodeNames )
            {
                OUString sPermittedMethod;
                OSL_VERIFY( aConfig.getNodeValue( nodeName ) >>= sPermittedMethod );

                if ( !aPermittedMethods.isEmpty() )
                    aPermittedMethods.append( ';' );
                aPermittedMethods.append( sPermittedMethod );
            }

            return aPermittedMethods.makeStringAndClear();
        }
    }


    Reference< XConnection > SAL_CALL ODriverDelegator::connect( const OUString& url, const Sequence< PropertyValue >& info )
    {
        Reference< XConnection > xConnection;
        if ( acceptsURL(url) )
        {
            Reference< XDriver > xDriver = loadDriver();
            if ( xDriver.is() )
            {
                OUString sURL;
                Reference<XStorage> xStorage;
                const PropertyValue* pIter = info.getConstArray();
                const PropertyValue* pEnd = pIter + info.getLength();

                for (;pIter != pEnd; ++pIter)
                {
                    if ( pIter->Name == "Storage" )
                    {
                        xStorage.set(pIter->Value,UNO_QUERY);
                    }
                    else if ( pIter->Name == "URL" )
                    {
                        pIter->Value >>= sURL;
                    }
                }

                if ( !xStorage.is() || sURL.isEmpty() )
                {
                    ::connectivity::SharedResources aResources;
                    const OUString sMessage = aResources.getResourceString(STR_NO_STORAGE);
                    ::dbtools::throwGenericSQLException(sMessage ,*this);
                }

                OUString sSystemPath;
                osl_getSystemPathFromFileURL( sURL.pData, &sSystemPath.pData );
                if ( sURL.isEmpty() || sSystemPath.isEmpty() )
                {
                    ::connectivity::SharedResources aResources;
                    const OUString sMessage = aResources.getResourceString(STR_INVALID_FILE_URL);
                    ::dbtools::throwGenericSQLException(sMessage ,*this);
                }

                bool bIsNewDatabase = !xStorage->hasElements();

                ::comphelper::NamedValueCollection aProperties;

                // properties for accessing the embedded storage
                OUString sKey = StorageContainer::registerStorage( xStorage, sSystemPath );
                aProperties.put( "storage_key", sKey );
                aProperties.put( "storage_class_name",
                    OUString(  "com.sun.star.sdbcx.comp.hsqldb.StorageAccess"  ) );
                aProperties.put( "fileaccess_class_name",
                    OUString(  "com.sun.star.sdbcx.comp.hsqldb.StorageFileAccess"  ) );

                // JDBC driver and driver's classpath
                aProperties.put( "JavaDriverClass",
                    OUString(  "org.hsqldb.jdbcDriver"  ) );
                aProperties.put( "JavaDriverClassPath",
                    OUString(
#ifdef SYSTEM_HSQLDB
                        HSQLDB_JAR
#else
                        "vnd.sun.star.expand:$LO_JAVA_DIR/hsqldb.jar"
#endif
                        " vnd.sun.star.expand:$LO_JAVA_DIR/sdbc_hsqldb.jar"
                        ) );

                // auto increment handling
                aProperties.put( "IsAutoRetrievingEnabled", true );
                aProperties.put( "AutoRetrievingStatement",
                    OUString(  "CALL IDENTITY()" ) );
                aProperties.put( "IgnoreDriverPrivileges", true );

                // don't want to expose HSQLDB's schema capabilities which exist since 1.8.0RC10
                aProperties.put( "default_schema",
                    OUString(  "true"  ) );

                // security: permitted Java classes
                NamedValue aPermittedClasses(
                    "hsqldb.method_class_names",
                    Any( lcl_getPermittedJavaMethods_nothrow( m_xContext ) )
                );
                aProperties.put( "SystemProperties", Sequence< NamedValue >( &aPermittedClasses, 1 ) );

                OUString sMessage;
                try
                {
                    static const OUStringLiteral sProperties(  u"properties"  );
                    if ( !bIsNewDatabase && xStorage->isStreamElement(sProperties) )
                    {
                        Reference<XStream > xStream = xStorage->openStreamElement(sProperties,ElementModes::READ);
                        if ( xStream.is() )
                        {
                            std::unique_ptr<SvStream> pStream( ::utl::UcbStreamHelper::CreateStream(xStream) );
                            if (pStream)
                            {
                                OStringBuffer sLine;
                                OString sVersionString;
                                while ( pStream->ReadLine(sLine) )
                                {
                                    if ( sLine.isEmpty() )
                                        continue;
                                    sal_Int32 nIdx {0};
                                    const std::string_view sIniKey = o3tl::getToken(sLine, 0, '=', nIdx);
                                    const OString sValue(o3tl::getToken(sLine, 0, '=', nIdx));
                                    if( sIniKey == "hsqldb.compatible_version" )
                                    {
                                        sVersionString = sValue;
                                    }
                                    else
                                    {
                                        if (sIniKey == "version" && sVersionString.isEmpty())
                                        {
                                            sVersionString = sValue;
                                        }
                                    }
                                }
                                if (!sVersionString.isEmpty())
                                {
                                    sal_Int32 nIdx {0};
                                    const sal_Int32 nMajor = o3tl::toInt32(o3tl::getToken(sVersionString, 0, '.', nIdx));
                                    const sal_Int32 nMinor = o3tl::toInt32(o3tl::getToken(sVersionString, 0, '.', nIdx));
                                    const sal_Int32 nMicro = o3tl::toInt32(o3tl::getToken(sVersionString, 0, '.', nIdx));
                                    if (     nMajor > 1
                                        || ( nMajor == 1 && nMinor > 8 )
                                        || ( nMajor == 1 && nMinor == 8 && nMicro > 0 ) )
                                    {
                                        ::connectivity::SharedResources aResources;
                                        sMessage = aResources.getResourceString(STR_ERROR_NEW_VERSION);
                                    }
                                }
                            }
                        } // if ( xStream.is() )
                        ::comphelper::disposeComponent(xStream);
                    }

                    // disallow any database/script files that contain a "SCRIPT[.*]" entry (this is belt and braces
                    // in that bundled hsqldb 1.8.0 is patched to also reject them)
                    //
                    // hsqldb 2.6.0 release notes have: added system role SCRIPT_OPS for export / import of database structure and data
                    // which seems to provide a builtin way to do this with contemporary hsqldb
                    static const OUStringLiteral sScript(u"script");
                    if (!bIsNewDatabase && xStorage->isStreamElement(sScript))
                    {
                        Reference<XStream > xStream = xStorage->openStreamElement(sScript, ElementModes::READ);
                        if (xStream.is())
                        {
                            std::unique_ptr<SvStream> pStream(::utl::UcbStreamHelper::CreateStream(xStream));
                            if (pStream)
                            {
                                OStringBuffer sLine;
                                while (pStream->ReadLine(sLine))
                                {
                                    OString sText = sLine.makeStringAndClear().trim();
                                    if (sText.startsWithIgnoreAsciiCase("SCRIPT"))
                                    {
                                        ::connectivity::SharedResources aResources;
                                        sMessage = aResources.getResourceString(STR_COULD_NOT_LOAD_FILE).replaceFirst("$filename$", sSystemPath);
                                        break;
                                    }
                                }
                            }
                        } // if ( xStream.is() )
                        ::comphelper::disposeComponent(xStream);
                    }

                }
                catch(Exception&)
                {
                }
                if ( !sMessage.isEmpty() )
                {
                    ::dbtools::throwGenericSQLException(sMessage ,*this);
                }

                // readonly?
                Reference<XPropertySet> xProp(xStorage,UNO_QUERY);
                if ( xProp.is() )
                {
                    sal_Int32 nMode = 0;
                    xProp->getPropertyValue("OpenMode") >>= nMode;
                    if ( (nMode & ElementModes::WRITE) != ElementModes::WRITE )
                    {
                        aProperties.put( "readonly", OUString(  "true"  ) );
                    }
                }

                Sequence< PropertyValue > aConnectionArgs;
                aProperties >>= aConnectionArgs;
                OUString sConnectURL = "jdbc:hsqldb:" + sSystemPath;
                Reference<XConnection> xOrig;
                try
                {
                    xOrig = xDriver->connect( sConnectURL, aConnectionArgs );
                }
                catch(const Exception&)
                {
                    StorageContainer::revokeStorage(sKey,nullptr);
                    throw;
                }

                // if the storage is completely empty, then we just created a new HSQLDB
                // In this case, do some initializations.
                if ( bIsNewDatabase && xOrig.is() )
                    onConnectedNewDatabase( xOrig );

                if ( xOrig.is() )
                {
                    // now we have to set the URL to get the correct answer for metadata()->getURL()
                    auto pMetaConnection = comphelper::getFromUnoTunnel<OMetaConnection>(xOrig);
                    if ( pMetaConnection )
                        pMetaConnection->setURL(url);

                    Reference<XComponent> xComp(xOrig,UNO_QUERY);
                    if ( xComp.is() )
                        xComp->addEventListener(this);

                    // we want to close all connections when the office shuts down
                    static Reference< XTerminateListener> s_xTerminateListener = [&]()
                    {
                        Reference< XDesktop2 > xDesktop = Desktop::create( m_xContext );

                        rtl::Reference<OConnectionController> tmp = new OConnectionController(this);
                        xDesktop->addTerminateListener(tmp);
                        return tmp;
                    }();
                    Reference< XComponent> xIfc = new OHsqlConnection( this, xOrig, m_xContext );
                    xConnection.set(xIfc,UNO_QUERY);
                    m_aConnections.push_back(TWeakPair(WeakReferenceHelper(xOrig),TWeakConnectionPair(sKey,TWeakRefPair(WeakReferenceHelper(xConnection),WeakReferenceHelper()))));

                    Reference<XTransactionBroadcaster> xBroad(xStorage,UNO_QUERY);
                    if ( xBroad.is() )
                    {
                        Reference<XTransactionListener> xListener(*this,UNO_QUERY);
                        xBroad->addTransactionListener(xListener);
                    }
                }
            }
        }
        return xConnection;
    }


    sal_Bool SAL_CALL ODriverDelegator::acceptsURL( const OUString& url )
    {
        bool bEnabled = false;
        javaFrameworkError e = jfw_getEnabled(&bEnabled);
        switch (e) {
        case JFW_E_NONE:
            break;
        case JFW_E_DIRECT_MODE:
            SAL_INFO(
                "connectivity.hsqldb",
                "jfw_getEnabled: JFW_E_DIRECT_MODE, assuming true");
            bEnabled = true;
            break;
        default:
            SAL_WARN(
                "connectivity.hsqldb", "jfw_getEnabled: error code " << +e);
            break;
        }
        return bEnabled  && url == "sdbc:embedded:hsqldb";
    }


    Sequence< DriverPropertyInfo > SAL_CALL ODriverDelegator::getPropertyInfo( const OUString& url, const Sequence< PropertyValue >& /*info*/ )
    {
        if ( !acceptsURL(url) )
            return Sequence< DriverPropertyInfo >();
        return
        {
            {
                "Storage",
                "Defines the storage where the database will be stored.",
                true,
                {},
                {}
            },
            {
                "URL",
                "Defines the url of the data source.",
                true,
                {},
                {}
            },
            {
                "AutoRetrievingStatement",
                "Defines the statement which will be executed to retrieve auto increment values.",
                false,
                "CALL IDENTITY()",
                {}
            }
        };
    }


    sal_Int32 SAL_CALL ODriverDelegator::getMajorVersion(  )
    {
        return 1;
    }


    sal_Int32 SAL_CALL ODriverDelegator::getMinorVersion(  )
    {
        return 0;
    }


    Reference< XTablesSupplier > SAL_CALL ODriverDelegator::getDataDefinitionByConnection( const Reference< XConnection >& connection )
    {
        ::osl::MutexGuard aGuard( m_aMutex );
        checkDisposed(ODriverDelegator_BASE::rBHelper.bDisposed);

        Reference< XTablesSupplier > xTab;

        TWeakPairVector::iterator i = std::find_if(m_aConnections.begin(), m_aConnections.end(),
            [&connection](const TWeakPairVector::value_type& rConnection) {
                return rConnection.second.second.first.get() == connection.get(); });
        if (i != m_aConnections.end())
        {
            xTab.set(i->second.second.second,UNO_QUERY);
            if ( !xTab.is() )
            {
                xTab = new OHCatalog(connection);
                i->second.second.second = WeakReferenceHelper(xTab);
            }
        }

        return xTab;
    }


    Reference< XTablesSupplier > SAL_CALL ODriverDelegator::getDataDefinitionByURL( const OUString& url, const Sequence< PropertyValue >& info )
    {
        if ( ! acceptsURL(url) )
        {
            ::connectivity::SharedResources aResources;
            const OUString sMessage = aResources.getResourceString(STR_URI_SYNTAX_ERROR);
            ::dbtools::throwGenericSQLException(sMessage ,*this);
        }

        return getDataDefinitionByConnection(connect(url,info));
    }

    // XServiceInfo

    OUString SAL_CALL ODriverDelegator::getImplementationName(  )
    {
        return IMPL_NAME;
    }

    sal_Bool SAL_CALL ODriverDelegator::supportsService( const OUString& _rServiceName )
    {
        return cppu::supportsService(this, _rServiceName);
    }

    Sequence< OUString > SAL_CALL ODriverDelegator::getSupportedServiceNames(  )
    {
        return { "com.sun.star.sdbc.Driver", "com.sun.star.sdbcx.Driver" };
    }

    void SAL_CALL ODriverDelegator::createCatalog( const Sequence< PropertyValue >& /*info*/ )
    {
        ::dbtools::throwFeatureNotImplementedSQLException( "XCreateCatalog::createCatalog", *this );
    }

    void ODriverDelegator::shutdownConnection(const TWeakPairVector::iterator& _aIter )
    {
        OSL_ENSURE(m_aConnections.end() != _aIter,"Iterator equals .end()");
        bool bLastOne = true;
        try
        {
            Reference<XConnection> _xConnection(_aIter->first.get(),UNO_QUERY);

            if ( _xConnection.is() )
            {
                Reference<XStatement> xStmt = _xConnection->createStatement();
                if ( xStmt.is() )
                {
                    Reference<XResultSet> xRes = xStmt->executeQuery("SELECT COUNT(*) FROM INFORMATION_SCHEMA.SYSTEM_SESSIONS WHERE USER_NAME ='SA'");
                    Reference<XRow> xRow(xRes,UNO_QUERY);
                    if ( xRow.is() && xRes->next() )
                        bLastOne = xRow->getInt(1) == 1;
                    if ( bLastOne )
                        xStmt->execute("SHUTDOWN");
                }
            }
        }
        catch(Exception&)
        {
        }
        if ( bLastOne )
        {
            // Reference<XTransactionListener> xListener(*this,UNO_QUERY);
            // a shutdown should commit all changes to the db files
            StorageContainer::revokeStorage(_aIter->second.first,nullptr);
        }
        if ( !m_bInShutDownConnections )
            m_aConnections.erase(_aIter);
    }

    void SAL_CALL ODriverDelegator::disposing( const css::lang::EventObject& Source )
    {
        ::osl::MutexGuard aGuard(m_aMutex);
        Reference<XConnection> xCon(Source.Source,UNO_QUERY);
        if ( xCon.is() )
        {
            TWeakPairVector::iterator i = std::find_if(m_aConnections.begin(), m_aConnections.end(),
                [&xCon](const TWeakPairVector::value_type& rConnection) { return rConnection.first.get() == xCon.get(); });

            if (i != m_aConnections.end())
                shutdownConnection(i);
        }
        else
        {
            Reference< XStorage> xStorage(Source.Source,UNO_QUERY);
            if ( xStorage.is() )
            {
                OUString sKey = StorageContainer::getRegisteredKey(xStorage);
                TWeakPairVector::iterator i = std::find_if(m_aConnections.begin(),m_aConnections.end(),
                    [&sKey] (const TWeakPairVector::value_type& conn) {
                        return conn.second.first == sKey;
                    });

                if ( i != m_aConnections.end() )
                    shutdownConnection(i);
            }
        }
    }

    void ODriverDelegator::shutdownConnections()
    {
        m_bInShutDownConnections = true;
        for (const auto& rConnection : m_aConnections)
        {
            try
            {
                Reference<XConnection> xCon(rConnection.first,UNO_QUERY);
                ::comphelper::disposeComponent(xCon);
            }
            catch(Exception&)
            {
            }
        }
        m_aConnections.clear();
        m_bInShutDownConnections = true;
    }

    void ODriverDelegator::flushConnections()
    {
        for (const auto& rConnection : m_aConnections)
        {
            try
            {
                Reference<XFlushable> xCon(rConnection.second.second.first.get(),UNO_QUERY);
                if (xCon.is())
                    xCon->flush();
            }
            catch(Exception&)
            {
                DBG_UNHANDLED_EXCEPTION("connectivity.hsqldb");
            }
        }
    }

    void SAL_CALL ODriverDelegator::preCommit( const css::lang::EventObject& aEvent )
    {
        ::osl::MutexGuard aGuard(m_aMutex);

        Reference< XStorage> xStorage(aEvent.Source,UNO_QUERY);
        OUString sKey = StorageContainer::getRegisteredKey(xStorage);
        if ( sKey.isEmpty() )
            return;

        TWeakPairVector::const_iterator i = std::find_if(m_aConnections.begin(), m_aConnections.end(),
            [&sKey] (const TWeakPairVector::value_type& conn) {
                return conn.second.first == sKey;
            });

        OSL_ENSURE( i != m_aConnections.end(), "ODriverDelegator::preCommit: they're committing a storage which I do not know!" );
        if ( i == m_aConnections.end() )
            return;

        try
        {
            Reference<XConnection> xConnection(i->first,UNO_QUERY);
            if ( xConnection.is() )
            {
                Reference< XStatement> xStmt = xConnection->createStatement();
                OSL_ENSURE( xStmt.is(), "ODriverDelegator::preCommit: no statement!" );
                if ( xStmt.is() )
                    xStmt->execute( "SET WRITE_DELAY 0" );

                bool bPreviousAutoCommit = xConnection->getAutoCommit();
                xConnection->setAutoCommit( false );
                xConnection->commit();
                xConnection->setAutoCommit( bPreviousAutoCommit );

                if ( xStmt.is() )
                    xStmt->execute( "SET WRITE_DELAY 60" );
            }
        }
        catch(Exception&)
        {
            TOOLS_WARN_EXCEPTION( "connectivity.hsqldb", "ODriverDelegator::preCommit" );
        }
    }

    void SAL_CALL ODriverDelegator::commited( const css::lang::EventObject& /*aEvent*/ )
    {
    }

    void SAL_CALL ODriverDelegator::preRevert( const css::lang::EventObject& /*aEvent*/ )
    {
    }

    void SAL_CALL ODriverDelegator::reverted( const css::lang::EventObject& /*aEvent*/ )
    {
    }

    namespace
    {

        const char* lcl_getCollationForLocale( const OUString& _rLocaleString, bool _bAcceptCountryMismatch = false )
        {
            static const char* pTranslations[] =
            {
                "af-ZA", "Afrikaans",
                "am-ET", "Amharic",
                "ar", "Arabic",
                "as-IN", "Assamese",
                "az-AZ", "Azerbaijani_Latin",
                "az-cyrillic", "Azerbaijani_Cyrillic",
                "be-BY", "Belarusian",
                "bg-BG", "Bulgarian",
                "bn-IN", "Bengali",
                "bo-CN", "Tibetan",
                "bs-BA", "Bosnian",
                "ca-ES", "Catalan",
                "cs-CZ", "Czech",
                "cy-GB", "Welsh",
                "da-DK", "Danish",
                "de-DE", "German",
                "el-GR", "Greek",
                "en-US", "Latin1_General",
                "es-ES", "Spanish",
                "et-EE", "Estonian",
                "eu", "Basque",
                "fi-FI", "Finnish",
                "fr-FR", "French",
                "gn-PY", "Guarani",
                "gu-IN", "Gujarati",
                "ha-NG", "Hausa",
                "he-IL", "Hebrew",
                "hi-IN", "Hindi",
                "hr-HR", "Croatian",
                "hu-HU", "Hungarian",
                "hy-AM", "Armenian",
                "id-ID", "Indonesian",
                "ig-NG", "Igbo",
                "is-IS", "Icelandic",
                "it-IT", "Italian",
                "iu-CA", "Inuktitut",
                "ja-JP", "Japanese",
                "ka-GE", "Georgian",
                "kk-KZ", "Kazakh",
                "km-KH", "Khmer",
                "kn-IN", "Kannada",
                "ko-KR", "Korean",
                "kok-IN", "Konkani",
                "ks", "Kashmiri",
                "ky-KG", "Kirghiz",
                "lo-LA", "Lao",
                "lt-LT", "Lithuanian",
                "lv-LV", "Latvian",
                "mi-NZ", "Maori",
                "mk-MK", "Macedonian",
                "ml-IN", "Malayalam",
                "mn-MN", "Mongolian",
                "mni-IN", "Manipuri",
                "mr-IN", "Marathi",
                "ms-MY", "Malay",
                "mt-MT", "Maltese",
                "my-MM", "Burmese",
                "nb-NO", "Danish_Norwegian",
                "ne-NP", "Nepali",
                "nl-NL", "Dutch",
                "nn-NO", "Norwegian",
                "or-IN", "Odia",
                "pa-IN", "Punjabi",
                "pl-PL", "Polish",
                "ps-AF", "Pashto",
                "pt-PT", "Portuguese",
                "ro-RO", "Romanian",
                "ru-RU", "Russian",
                "sa-IN", "Sanskrit",
                "sd-IN", "Sindhi",
                "sk-SK", "Slovak",
                "sl-SI", "Slovenian",
                "so-SO", "Somali",
                "sq-AL", "Albanian",
                "sr-YU", "Serbian_Cyrillic",
                "sv-SE", "Swedish",
                "sw-KE", "Swahili",
                "ta-IN", "Tamil",
                "te-IN", "Telugu",
                "tg-TJ", "Tajik",
                "th-TH", "Thai",
                "tk-TM", "Turkmen",
                "tn-BW", "Tswana",
                "tr-TR", "Turkish",
                "tt-RU", "Tatar",
                "uk-UA", "Ukrainian",
                "ur-PK", "Urdu",
                "uz-UZ", "Uzbek_Latin",
                "ven-ZA", "Venda",
                "vi-VN", "Vietnamese",
                "yo-NG", "Yoruba",
                "zh-CN", "Chinese",
                "zu-ZA", "Zulu",
                nullptr, nullptr
            };

            OUString sLocaleString( _rLocaleString );
            char nCompareTermination = 0;

            if ( _bAcceptCountryMismatch )
            {
                // strip the country part from the compare string
                sal_Int32 nCountrySep = sLocaleString.indexOf( '-' );
                if ( nCountrySep > -1 )
                    sLocaleString = sLocaleString.copy( 0, nCountrySep );

                // the entries in the translation table are compared until the
                // - character only, not until the terminating 0
                nCompareTermination = '-';
            }

            const char** pLookup = pTranslations;
            for ( ; *pLookup; pLookup +=2 )
            {
                sal_Int32 nCompareUntil = 0;
                while ( (*pLookup)[ nCompareUntil ] != nCompareTermination && (*pLookup)[ nCompareUntil ] != 0 )
                    ++nCompareUntil;

                if ( sLocaleString.equalsAsciiL( *pLookup, nCompareUntil ) )
                    return *( pLookup + 1 );
            }

            if ( !_bAcceptCountryMismatch )
                // second round, this time without matching the country
                return lcl_getCollationForLocale( _rLocaleString, true );

            OSL_FAIL( "lcl_getCollationForLocale: unknown locale string, falling back to Latin1_General!" );
            return "Latin1_General";
        }


        OUString lcl_getSystemLocale( const Reference< XComponentContext >& _rxContext )
        {
            OUString sLocaleString = "en-US";
            try
            {

                Reference< XMultiServiceFactory > xConfigProvider(
                    css::configuration::theDefaultProvider::get( _rxContext ) );


                // arguments for creating the config access
                Sequence<Any> aArguments(comphelper::InitAnyPropertySequence(
                {
                    {"nodepath", Any(OUString("/org.openoffice.Setup/L10N" ))}, // the path to the node to open
                    {"depth", Any(sal_Int32(-1))}, // the depth: -1 means unlimited
                }));
                // create the access
                Reference< XPropertySet > xNode(
                    xConfigProvider->createInstanceWithArguments(
                        "com.sun.star.configuration.ConfigurationAccess",
                        aArguments ),
                    UNO_QUERY );
                OSL_ENSURE( xNode.is(), "lcl_getSystemLocale: invalid access returned (should throw an exception instead)!" );


                // ask for the system locale setting
                if ( xNode.is() )
                    xNode->getPropertyValue("ooSetupSystemLocale") >>= sLocaleString;
            }
            catch( const Exception& )
            {
                TOOLS_WARN_EXCEPTION( "connectivity.hsqldb", "lcl_getSystemLocale" );
            }
            if ( sLocaleString.isEmpty() )
            {
                rtl_Locale* pProcessLocale = nullptr;
                osl_getProcessLocale( &pProcessLocale );
                sLocaleString = LanguageTag( *pProcessLocale).getBcp47();
            }
            return sLocaleString;
        }
    }

    void ODriverDelegator::onConnectedNewDatabase( const Reference< XConnection >& _rxConnection )
    {
        try
        {
            Reference< XStatement > xStatement = _rxConnection->createStatement();
            OSL_ENSURE( xStatement.is(), "ODriverDelegator::onConnectedNewDatabase: could not create a statement!" );
            if ( xStatement.is() )
            {
                OUStringBuffer aStatement;
                aStatement.append( "SET DATABASE COLLATION \"" );
                aStatement.appendAscii( lcl_getCollationForLocale( lcl_getSystemLocale( m_xContext ) ) );
                aStatement.append( "\"" );

                xStatement->execute( aStatement.makeStringAndClear() );
            }
        }
        catch( const Exception& )
        {
            TOOLS_WARN_EXCEPTION( "connectivity.hsqldb", "ODriverDelegator::onConnectedNewDatabase" );
        }
    }


}   // namespace connectivity


extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
connectivity_hsqldb_ODriverDelegator_implementation(
    css::uno::XComponentContext* context , css::uno::Sequence<css::uno::Any> const&)
{
    return cppu::acquire(new connectivity::ODriverDelegator(context));
}


/* vim:set shiftwidth=4 softtabstop=4 expandtab: */